| PC | avoirdupois weight [Lat. pondus civile]; packed cells; paper chromatography; paracortex; parent cell... |
|---|---|
| PCA | para-chloramphetamine; parietal cell antibody; passive cutaneous anaphylaxis; patient care assistant... |
| PCB | paracervical block; polychlorinated biphenyl; portacaval bypass; postcoital bleeding; procarbazine |
| PCT | peripheral carcinoid tumor; plasma clotting time; plasmacrit test; plasmacytoma; polychlorinated tri... |
| PEEP | Positive End-Expiratory Pressure ? Ix 1. PaO2 < 60 mmHg, ... |
| shunt | 1. To turn to one side, to divert, to bypass. 2. <cardiology> A passage or anastomosis between two natural channels, especially between blood vessels. Such structures may be formed physiologically (for example to bypass a thrombosis) or they may be structural anomalies. 3. <surgery> A surgically created anastomosis, also, the operation of forming a shunt. (18 Nov 1997) |
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| shunt, left to right | A term used to describe the diversion of blood from the higher pressure left side of the heart to the right side (pulmonary circuit). Can be seen in ventricular septal defect, atrial septal defect and patent ductus arteriosus (congenital at birth). (27 Sep 1997) |
| shunt, right to left | <cardiology> A term used to describe the diversion of blood from the right side of the heart to the left. Long standing left to right shunts can lead to increased right sided pressures in the pulmonary circuit (pulmonary hypertension). Eventually the left to right shunt reverses and blood flows from the right to the left. Can be seen in large untreated ventricular septal defect or atrial septal defect. (27 Sep 1997) |
| splenorenal shunt | Anastomosis of the splenic vein to the left renal vein, usually end-to-side, for control of portal hypertension. Synonym: renal-splenic venous shunt. (05 Mar 2000) |
| Denver shunt | LeVeen-type shunt with an implanted, valved, manually compressible chamber used to determine and maintain patency. (05 Mar 2000) |
| dialysis shunt | Arteriovenous shunt connecting the arterial and venous cannulas in arm or leg. (05 Mar 2000) |
| Dickens shunt | <biochemistry> A pathway of hexose oxidation in which glucose-6-phosphate undergoes two successive oxidations by NADP, the final one being an oxidative decarboxylation to form a pentose phosphate. Diverges from this when glucose-6-phosphate is oxidized to ribose 5 phosphate by the enzyme glucose-6 phosphate dehydrogenase. This step reduces NADP to NADPH, generating a source of reducing power in cells for use in reductive biosyntheses. In plants, part of the pathway functions in the formation of hexoses from carbon dioxide in photosynthesis. Also important as source of pentoses, for example for nucleic acid biosynthesis. This pathway is the main metabolic pathway in neutrophils, congenital deficiency in the pathway produces sensitivity to infection. Alternative metabolic route to Embden Meyerhof pathway for breakdown of glucose. (18 Nov 1997) |
| distal splenorenal shunt | Anastomosis of the splenic end of the divided splenic vein to the left renal vein. Synonym: distal splenorenal shunt. (05 Mar 2000) |
| Torkildsen shunt | A ventriculocisternal shunt. See: shunt. (05 Mar 2000) |
| endolymphatic shunt | Surgical fistulization of the membranous labyrinth of the inner ear with mastoid, subarachnoid or cochlear shunt. This procedure is used in the treatment of meniere's disease. (12 Dec 1998) |
| transjugular intrahepatic portosystemic shunt | An interventional radiology procedure to relieve portal hypertension. (05 Mar 2000) |
| jejunoileal shunt | A surgical procedure consisting of the anastomosis of the proximal part of the jejunum to the distal portion of the ileum, so as to bypass the nutrient-absorptive segment of the small intestine, to treat morbid obesity. (12 Dec 1998) |
| left-to-right shunt | A diversion of blood from the left side of the heart to right (as through a septal defect), or from the systemic circulation to the pulmonary (as through a patent ductus arteriosus). (05 Mar 2000) |
| LeVeen shunt | A plastic tube used to transport ascitic fluid from the abdomen, via a jugular vein, to the superior vena cava. (05 Mar 2000) |
| absorbable surgical suture | A surgical suture material prepared from a substance that can be digested by body tissues and is therefore not permanent; it is available in various diameters and tensile strengths, and can be treated to modify its resistance to absorption and be impregnated with antimicrobial agents. (05 Mar 2000) |